When throwing in hops at the last 10 minutes of the boil to get some flavor and aroma in the beer do I categorize the "hop use" in Beer Smith as Boil or Aroma? Using "Boil" adds 13.3 IBUs and "Aroma" has no effect to the IBU.
Thoughts?

Aroma goes in at the end of the boil. At the 0 minute mark. The time you put in the aroma field is the time you plan to steep the hops for before cooling the wort. Leaving the hops steeping for a while, increases the aroma.